Verhnyaya (means Upper) Gubaha - small industrial town in middle of Russia, in Urals Mountains. 30 years ago it was abandoned. Citizens moved to new town nearby. Why all of the thousands inhabitants left the town?
Coke plant was built near the town. And in windless days air over place is not very useful for people.

Only the ruins of most tough buildings is remaining here. Most interesting construction - town palace.

Now some people still live here. Town officially is part of "live" Gubaha town. They have a electricity, roads is cleaning (we have a 6 month winter with 2meter snow), and water supplies. Some windless days thee have now very quality air, but they can left place on some hours.

Recently returned from field.
I have tested Panda1 installed on X8. 2 strange results:

1. Too small roll stability. Think, that this is due small PID. May be I need add to 90.

2. I have tested Nav and RTL mods at the ground - no problem, throttle works at max, this is OK.

During 2 test flights I try to fly by navpoints, plane rotates to the first navpoint but sets throttle to zero. Why? Speed did not reached target speed, it seed to 72 km/h.
RTL mode lead to zero throttle too.